Use tabs instead of spaces to align comments in DSTD header

AOpen DXPL Plus-U and Intel XE7501devkit use »COREBOOT« as
OEM Table ID.

Unify the DSDT by aligning the comments in the DSDT header with
tabs in accordance with the coding style [1].

[1] http://www.coreboot.org/Development_Guidelines#Coding_Style

Change-Id: I78e6aa8d0318b519b1df5e2178d387dc58e48323
Signed-off-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-on: http://review.coreboot.org/2278
Tested-by: build bot (Jenkins)
Reviewed-by: Anton Kochkov <anton.kochkov@gmail.com>
diff --git a/src/mainboard/aopen/dxplplusu/dsdt.asl b/src/mainboard/aopen/dxplplusu/dsdt.asl
index 095df06..b8bdde8 100644
--- a/src/mainboard/aopen/dxplplusu/dsdt.asl
+++ b/src/mainboard/aopen/dxplplusu/dsdt.asl
@@ -22,10 +22,10 @@
 DefinitionBlock(
 	"dsdt.aml",
 	"DSDT",
-	0x04,           // DSDT revision: ACPI v4.0
-	"COREv4",       // OEM id
-	"COREBOOT",     // OEM table id
-	0x20111103      // OEM revision
+	0x04,		// DSDT revision: ACPI v4.0
+	"COREv4",	// OEM id
+	"COREBOOT",	// OEM table id
+	0x20111103	// OEM revision
 ) {
 
 Scope(\_SB)